Furnaces – With exhaust gas treatment means – Afterburning means
Patent
1989-05-05
1990-11-13
Yuen, Henry C.
Furnaces
With exhaust gas treatment means
Afterburning means
110235, 110248, 110244, F23B 500
Patent
active
049694057
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
(1) Field of the Invention
THIS INVENTION relates to improvements in incinerators.
(2) Prior Art
Incinerators for municipal, hospital and veterinary use are required to be particularly efficient in the disposal of waste materials. Such an incinerator is commonly of two-stage type, with primary combustion carried out in a first chamber, gases, including unburnt gases, from the first chamber being conveyed to a second chamber for completion of the incineration process before escape by way of a flue.
SUMMARY OF THE PRESENT INVENTION
The general object of the present invention is to provide an incinerator which is particularly efficient in operation.
With the foregoing and other objects in view, the invention resides broadly in an incinerator of the type having at least one combustion chamber which may be charged by way of a loading door, a burner being directed into the chamber and a gas outlet leading from the chamber to a flue, wherein:
the chamber is of substantially elliptical shape in plan view;
the burner is located at one end of the long axis of the ellipse, being directed obliquely down towards the bottom of the chamber at the opposite end of the long axis; and
the gas outlet from the top of the chamber, is from the same end of the chamber's long axis as the burner.
Preferably the incinerator is of two-stage type with a primary combustion chamber the gas outlet from which enters an end of the bottom of a secondary combustion chamber of similar elliptical form superimposed on and aligned with the primary chamber.
Preferably the loading door is located to direct waste material to be incinerated to the short axis of the elliptical primary chamber. This waste material is preferably fed through the loading door by a feeder mechanism including a bin to receive the waste and of which the rear end leads to the loading doorway, a pusher blade being located in the bin and drive means being provided for advancing the pusher blade to force waste material from the bin through the loading doorway.
Other features of the invention will become apparent from the following description.
BRIEF DESCRIPTION OF THE DRAWINGS
In order that a preferred embodiment of the invention may be readily understood and carried into practical effect, reference is now made to the accompanying drawings, wherein:
FIG. 1 is a front elevational view of an incinerator according to the invention, its feeder mechanism being omitted;
FIG. 2 is a partly broken-away plan view of the incinerator;
FIG. 3 is a sectional view of the incinerator taken along line 3--3 in FIG. 2;
FIG. 4 is a cross-sectional view of the incinerator taken along line 4--4 in FIG. 3;
FIG. 5 is a diagrammatic view of a double incerator installation;
FIG. 6 is a partly broken-away side elevation of the incinerator feeder mechanism; and
FIG. 7 is a plan view of the feeder mechanism.
DETAILED DESCRIPTION OF THE PREFERRED
EMBODIMENT
The incinerator illustrated in FIGS. 1 to 4 is substantially elliptical in plan view and of two-stage type, comprising a primary or lower chamber 10 upon which is superimposed a secondary or upper chamber 11, from which there leads a flue 12 with a draught control 13.
Each of the primary chamber 10 and secondary chamber 11 has a steel outer casing 14 and a lining 15 of a castable refractory material within its wall and within the bottom of the primary chamber and the top of the secondary chamber. Additionally, the secondary chamber is formed with a bottom 16 of a castable refractory material, reinforced in any suitable way, for example by incorporation of stainless-steel fibres in the refractory material. This part forms, between the primary chamber 10 and the secondary chamber 11, a partition which terminates some distance short of one end of the long axis of the primary and secondary chambers to leave a passage 17 from the one to the other. The two chambers are held together in superimposed and aligned arrangement by bolting together attachment flanges 18 about the top of the primary chamber and the bottom of t
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Jandu Pty. Ltd.
Yuen Henry C.
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